.page-about {
  background: var(--paper);
  color: var(--night);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about .breadcrumb {
  padding-top: 20px;
  padding-bottom: 12px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  color: var(--paper);
  background:
    radial-gradient(115% 85% at 86% 6%, rgba(230, 162, 60, 0.34), rgba(230, 162, 60, 0) 60%),
    linear-gradient(158deg, #12352B 0%, #12352B 52%, #1F4A3D 100%);
  padding: clamp(26px, 6vw, 56px) 0 clamp(34px, 7vw, 76px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -52%;
  width: min(620px, 78%);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244, 124, 60, 0.24), rgba(244, 124, 60, 0) 68%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 46%;
  height: 100%;
  background: linear-gradient(102deg, rgba(246, 239, 227, 0.07), rgba(246, 239, 227, 0));
  clip-path: polygon(0 0, 100% 0, 62% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 44px);
  align-items: end;
}

.page-about .about-hero .eyebrow {
  color: var(--amber);
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(34px, 6.6vw, 66px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  margin: 0.3em 0 0.42em;
  color: var(--paper);
}

.page-about .lamp-word {
  color: var(--amber);
  position: relative;
  padding-bottom: 2px;
  border-bottom: 3px solid rgba(244, 124, 60, 0.72);
}

.page-about .about-lead {
  max-width: 36em;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.85;
  color: rgba(246, 239, 227, 0.86);
  margin: 0 0 18px;
}

.page-about .about-hero-meta {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid rgba(201, 165, 106, 0.34);
}

.page-about .about-hero-media {
  margin: 0;
  position: relative;
}

.page-about .about-hero-media img {
  width: 100%;
  height: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 22px 100%, 0 calc(100% - 22px));
  box-shadow: 0 28px 60px -30px rgba(0, 0, 0, 0.62);
}

.page-about .about-hero-media .media-caption {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--mist);
  letter-spacing: 0.03em;
}

/* ---------- 主体骨架 ---------- */
.page-about .about-shell {
  padding-top: clamp(36px, 6vw, 72px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .about-rail {
  display: none;
}

.page-about .rail-title {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--deep-amber);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: var(--line);
}

.page-about .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .rail-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 10px 9px 6px;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--night);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease), color 0.22s var(--ease);
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  color: var(--deep-amber);
  border-left-color: var(--wick);
  background: rgba(230, 162, 60, 0.09);
}

.page-about .rail-dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mist);
  transform: translateY(-2px);
  transition: background 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .rail-link:hover .rail-dot {
  background: var(--wick);
  box-shadow: 0 0 0 4px rgba(244, 124, 60, 0.16);
}

.page-about .rail-num {
  font-size: 11px;
  color: var(--warm-gray);
  letter-spacing: 0.06em;
}

/* ---------- 章节 ---------- */
.page-about .about-section {
  scroll-margin-top: 96px;
}

.page-about .about-section + .about-section {
  margin-top: clamp(42px, 7vw, 84px);
}

.page-about .about-section .eyebrow {
  color: var(--deep-amber);
}

.page-about .about-section h2.section-title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(27px, 4.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 12px 0 20px;
  color: var(--ink-green);
  max-width: 20em;
}

.page-about .about-intro {
  font-size: 16px;
  line-height: 1.85;
  color: var(--warm-gray);
  max-width: 40em;
  margin: 0 0 26px;
}

.page-about .about-cols {
  display: grid;
  gap: 24px;
}

.page-about .prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--night);
}

.page-about .prose a {
  color: var(--deep-amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 90, 31, 0.45);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .prose a:hover,
.page-about .prose a:focus-visible {
  color: var(--wick);
  border-bottom-color: var(--wick);
}

.page-about .about-note {
  padding: 20px 22px;
  background: rgba(201, 165, 106, 0.13);
  border-left: 3px solid var(--amber);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-about .note-title {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--deep-amber);
  margin: 0 0 8px;
}

.page-about .about-note p {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-green);
}

.page-about .about-note .note-sub {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 12.5px;
  color: var(--warm-gray);
  margin: 0;
}

.page-about .about-band {
  margin: clamp(24px, 4vw, 36px) 0 0;
}

.page-about .about-band img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-band .media-caption,
.page-about .about-hero-media .media-caption {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--warm-gray);
  letter-spacing: 0.02em;
}

/* ---------- 时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tl-item {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 0 0 26px 24px;
  border-left: var(--line);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 12px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--mist);
  box-shadow: 0 0 0 4px rgba(201, 165, 106, 0.16);
  transition: background 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-about .tl-item:hover::before {
  background: var(--wick);
  box-shadow: 0 0 0 6px rgba(244, 124, 60, 0.18);
}

.page-about .tl-item:last-child {
  border-left-color: transparent;
  padding-bottom: 4px;
}

.page-about .tl-year {
  font-size: clamp(26px, 5vw, 34px);
  line-height: 1;
  font-weight: 700;
  color: var(--mist);
  letter-spacing: 0.02em;
  transition: color 0.24s var(--ease);
}

.page-about .tl-item:hover .tl-year {
  color: var(--deep-amber);
}

.page-about .tl-title {
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 700;
  margin: 4px 0 6px;
  color: var(--ink-green);
}

.page-about .tl-body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--warm-gray);
  max-width: 40em;
}

.page-about .about-footnote {
  margin: 26px 0 0;
  padding: 14px 0 0;
  border-top: var(--line);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--warm-gray);
  max-width: 42em;
}

/* ---------- 团队 ---------- */
.page-about .about-section--dark {
  position: relative;
  background: linear-gradient(165deg, #12352B 0%, #1F4A3D 100%);
  color: var(--moon);
  padding: clamp(24px, 4.4vw, 48px) clamp(20px, 4vw, 44px) clamp(28px, 5vw, 52px);
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 0 100%);
}

.page-about .about-section--dark::after {
  content: "";
  position: absolute;
  right: 8%;
  top: -18%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(230, 162, 60, 0.28), rgba(230, 162, 60, 0) 70%);
  pointer-events: none;
}

.page-about .about-section--dark h2.section-title {
  color: var(--paper);
}

.page-about .about-intro.on-dark {
  color: rgba(220, 235, 226, 0.8);
}

.page-about .about-stats {
  display: grid;
  gap: 16px;
  margin: 0 0 30px;
  position: relative;
  z-index: 1;
}

.page-about .stat-block {
  padding: 18px 20px;
  background: rgba(220, 235, 226, 0.07);
  border: 1px solid rgba(201, 165, 106, 0.3);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-about .stat-block:hover {
  transform: translateY(-2px);
  border-color: var(--amber);
  background: rgba(230, 162, 60, 0.1);
}

.page-about .stat-num {
  font-family: var(--font-heading);
  font-size: clamp(38px, 7vw, 54px);
  line-height: 1;
  font-weight: 900;
  color: var(--amber);
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}

.page-about .stat-label {
  margin: 0 0 8px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .stat-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(220, 235, 226, 0.72);
}

.page-about .about-team-grid {
  display: grid;
  gap: 22px;
  position: relative;
  z-index: 1;
}

.page-about .prose.on-dark p {
  color: rgba(246, 239, 227, 0.86);
}

.page-about .about-team-media {
  margin: 0;
}

.page-about .about-team-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid rgba(201, 165, 106, 0.35);
}

.page-about .about-team-media .media-caption {
  margin-top: 10px;
  font-size: 12.5px;
  color: rgba(220, 235, 226, 0.66);
}

/* ---------- 维护机制 ---------- */
.page-about .maintain-grid {
  display: grid;
  gap: 16px;
}

.page-about .maintain-card {
  padding: 20px 20px 22px;
  background: #FBF6EC;
  border: var(--line);
  border-top: 3px solid var(--mist);
  transition: border-top-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-about .maintain-card:hover {
  border-top-color: var(--wick);
  box-shadow: 0 16px 34px -26px rgba(18, 53, 43, 0.6);
}

.page-about .maintain-kicker {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--deep-amber);
  margin: 0 0 8px;
}

.page-about .maintain-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink-green);
  margin: 0 0 8px;
}

.page-about .maintain-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--warm-gray);
}

.page-about .lamp-legend {
  margin-top: 26px;
  padding: 18px 20px 20px;
  background: rgba(201, 165, 106, 0.1);
  border-left: 3px solid var(--amber);
}

.page-about .legend-title {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--deep-amber);
  margin: 0 0 12px;
}

.page-about .legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .legend-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--night);
}

.page-about .legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.page-about .legend-dot--steady {
  background: #4E9C72;
  box-shadow: 0 0 0 3px rgba(78, 156, 114, 0.18);
}

.page-about .legend-dot--watch {
  background: var(--mist);
  box-shadow: 0 0 0 3px rgba(201, 165, 106, 0.2);
}

.page-about .legend-dot--live {
  background: var(--wick);
  box-shadow: 0 0 0 3px rgba(244, 124, 60, 0.22);
}

.page-about .legend-name {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--deep-amber);
  min-width: 3.4em;
}

/* ---------- 服务范围 ---------- */
.page-about .reach-panel {
  padding: 22px;
  background: var(--ink-green);
  color: var(--moon);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .reach-title {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(201, 165, 106, 0.34);
}

.page-about .reach-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .reach-list li {
  display: grid;
  gap: 3px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

.page-about .reach-key {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .reach-note {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(220, 235, 226, 0.78);
}

.page-about .reach-panel .btn {
  display: inline-block;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-about .timeline {
    padding-left: 4px;
  }

  .page-about .tl-item {
    grid-template-columns: 118px minmax(0, 1fr);
    column-gap: 26px;
    padding-left: 28px;
    padding-bottom: 30px;
  }

  .page-about .tl-year {
    font-size: 34px;
  }

  .page-about .about-stats {
    grid-template-columns: 1.15fr 0.95fr 0.95fr;
    align-items: start;
  }

  .page-about .stat-block:nth-child(2) {
    margin-top: 18px;
  }

  .page-about .stat-block:nth-child(3) {
    margin-top: 36px;
  }

  .page-about .maintain-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .maintain-card:nth-child(2) {
    margin-top: 16px;
  }

  .page-about .legend-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-cols--reach {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
    gap: 28px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-hero-media {
    transform: translateY(-8px);
  }
}

@media (min-width: 980px) {
  .page-about .about-shell {
    display: grid;
    grid-template-columns: 212px minmax(0, 1fr);
    column-gap: clamp(30px, 4vw, 64px);
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 96px;
  }

  .page-about .about-flow {
    min-width: 0;
  }

  .page-about .about-section--dark {
    padding: clamp(30px, 3.4vw, 52px) clamp(26px, 3.4vw, 52px);
  }
}

@media (min-width: 1140px) {
  .page-about .about-hero-copy {
    padding-bottom: 12px;
  }

  .page-about .tl-body p {
    font-size: 16px;
  }
}
<<<END>>>